Topic of the talk: Monitoring Compositional Data using Multivariate EWMA.
Date and time: 27th March, 16:00.
Place: Building 7A of the UPV, ground floor.
Abstract:
Recently, the monitoring of compositional data by means of control charts has been investigated in the Statistical Process Control literature. In this presentation, we develop a Phase II Multivariate Exponentially Weighted Moving Average (MEWMA) control chart, for the continuous surveillance of compositional data based on a transformation into coordinate representation. We use a Markov chain approximation to determine the performance of the proposed multivariate control chart. The optimal MEWMA smoothing constants, control limits and out-of-control Average Run Lengths have been computed for different combinations of the in-control Average Run Lengths and the number of variables. Several tables are presented and enumerated to show the statistical performance of the proposed control chart. An example illustrates the use of this chart on an industrial problem from a plant in Europe.
Slides: PDF file.
Organised by the Department of Applied Statistics, Operational Research and Quality and the Centre for Quality and Change Management of the Universitat Politècnica de València.
Short CV
Current academic position
- Position: Professeur des universités (Full Professor).
- Entity: Université de Nantes, France.
- Centre: Institut Universitaire de Technologie (IUT) de Nantes.
- Department: Department of Quality, Industrial Logistics and Organisation (QLIO).
- Research group: Systèmes Logistiques et de Production.
- Research centre: Laboratoire des Sciences du Numérique de Nantes (LS2N), UMR CNRS 6004.
- Personal website: http://philippe.castagliola.free.fr/.
Teaching topics
- Statistics.
- Statistical Quality Control.
Research topic
Statistical Process Monitoring (SPM).
Current editorial activity
- Associate Editor for Quality Engineering (indexed in the WoS) since 2019.
- Associate Editor for Communications in Statistics (LSTA, WoS; LSSP, WoS; UCAS) since 2015.
- Associate Editor for Quality Technology & Quantitative Management (indexed in the WoS) since 2012.
- Associate Editor for International Journal of Reliability, Quality and Safety Engineering (indexed in the WoS) since 2004.
Research activity
- 20 invited talks and seminars since 2008.
- 4 international research grants since 2002.
- 18 (co)supervised PhD Thesis since 2004.
- Member of the organising/scientific committee of 15 national or international scientific conferences since 2001.
- More than 100 (co)authored papers in the WoS since 1989.
- 7 book chapters (co)authored since 2001.
